Question

For what values of k, the equation 4x²+2k+ 1 = 0 has equal roots?​

Answer 1

Step-by-step explanation:

for equal roots, b² - 4ac = 0

in the given equation, a = 4, b = 2k, c = 1

=> (2k)² - 4×4×1 = 0

=> 4k² - 16 = 0

=> 4k² = 16

=> k² = 4

=> k = ± 2

=> k = 2 and k = -2